The Case crew-neck short-sleeve sweater by Derek Lam 10 Crosby features a striped pattern and side button detailing. The Case crew-neck short-sleeve sweater by Derek Lam 10 Crosby features a striped pattern and side button detailing. Named after the original NYC flagship store address, Derek Lam launched Derek Lam 10 Crosby in 2011 to elevate and transform everyday style through fit, form, fabric, color, and attitude.